ReactJS and React Native similarities and differences

#ReactJS and #ReactNative similarities and differences - give our #article a read!

  • ReactJS and React Native similarities and differencesReactJS is a JavaScript library created by Facebook to tackle the User Interface needs for high performance and dynamic.
  • Start-up – Contrary to ReactJS, where the developer has to choose a bundler while trying to pick which of the bundling modules will be best for the project, React Native delivers everything needed.
  • Instead, delivers components working similarly and most of them can be translated into their equivalents in HTML, e.g. View to div and Text to something like a mixup of span and p. Due to this, the libraries used with ReactJS cannot be used in the React Native framework.
  • Summary – Both ReactJS and React Native are great for fast complex UI building and transitioning from the former to the latter isn’t hard for those who enjoy learning new JavaScript frameworks.
  • What should be remembered is: – React Native is a framework while ReactJS is a JavaScript libraryReact Native doesn’t use HTMLReactJS gives all the advantages of React NativeReactJS and React Native both follow component-based architectureYou can write native mobile components in React Native to give off the feeling of a…

ReactJS is a JavaScript library created by Facebook to tackle the User Interface needs for high performance and dynamic. The JavaScript library was released in 2011 bringing a fresh outlook on…
Continue reading “ReactJS and React Native similarities and differences”

Cosmic JS Blog Stay tuned for feature roll-outs, news and updates as we continue to help you manage content for your websites and applications faster and easier.

How to Build a Cross-Platform Blog Using #ReactNative, #NodeJS and #CosmicJS 🚀

  • Cosmic JS is an API-first cloud-based content platform that makes it not only easy to add dynamic content to any existing or new website, but makes it possible to seamlessly deliver content across devices and platforms.
  • This comes with everything you need to get started with a basic website as well as the codebase for the native applications running React Native for iOS and Android.
  • React Native is a very powerful way to build applications for both iOS and Android.
  • To install and run the iOS React Native application run the following commands: – – Run the following commands to run the Android application (make sure you have your Android device emulator open): – – – – Looking at index.ios.js and index.android.js you will notice that the root of our…
  • Now when you edit content in your Cosmic JS bucket, you will see that the content automatically updates across Web, iOS and Android applications.

Cosmic JS is a cloud-hosted content platform that offers a flexible and intuitive CMS API. Build websites and applications with more freedom and manage content easier. Get started for Free.
Continue reading “Cosmic JS Blog Stay tuned for feature roll-outs, news and updates as we continue to help you manage content for your websites and applications faster and easier.”

6 Simple ways to speed up your react native app. – codeburst

6 Simple ways to speed up your #reactnative app.  #redux

  • shouldComponentUpdate life-cycle method is used in regular non pure React Component to cancel the re-render by returning false in certain scenarios.Following two code samples do the same thing.class MyComponent extends React.PureComponent { //}class MyComponent extends React.Component { // nextState) { if(this.props.firstProp === nextProps.
  • firstProp this.props.secondProp === nextProps.secondProp) { return false; } return true } //}Both of the above examples can help you save some wasted renders.
  • Having a unique key on every list item, saves react re-rendering it again.class MyComponent extends React.PureComponent { render() { return this.props.data.map((item, i) = { return Text key={item.id}{item.title}/Text }); }}3.
  • Bind early and don’t create functions inside render.Do thisclass MyComponent extends React.PureComponent { constructor(props) { super(props); this.doWork = this.doWork.bind(this); } doWork() { // doing some work here.
  • // this.props.dispatch…. } render() { return Text onPress={this.doWork}Do Some Work/Text } }Don’t do this inside render.Text onPress={ () = this.doWork() }Do Some Work/TextorText onPress={ this.doWork.bind(this) }Do Some Work/TextBecause render is called very often and every time you do any of the two things above, a new function is created.4.

In my previous article I have talked about hacking event loop for improving performance of your app. Your goal is to retain 60 FPS throughout. All of that applies to react or react native app as well…
Continue reading “6 Simple ways to speed up your react native app. – codeburst”

Impress Your Friends With Code Splitting in React – Hacker Noon

Impress Your Friends With #Code Splitting in #ReactJS:  by @burkeholland #JavaScript

  • Both of those actions show the edit form.First I am going to add a spot in my state for this “EditForm” component to live.class Heroes extends Component { constructor(props) { super(props); this.state = { …, lazyEditHero: null } } …, render() { return ( … ) }}I put mine in…
  • I have put this in a function called LoadEditFormclass Heroes extends Component { constructor(props) { super(props); this.state = { … lazyEditHero: null } } async LoadEditForm() { const { default : EditHero } = await import(‘.
  • /EditHero’); this.setState({ lazyEditHero: EditHero }) } render() { return ( … ) }}Now we just need to call this LoadEditForm from the two functions that trigger the editor component to be shown.class Heroes extends Component { constructor(props) { super(props); this.state = { … lazyEditHero: null } } async LoadEditForm() {…
  • /EditHero’); this.setState({ lazyEditHero: EditHero }) } handleSelect = async hero = { await this.LoadEditForm(); this.setState({ selectedHero: hero }); } handleEnableAddMode = async () = { await this.LoadEditForm(); this.setState({ addingHero: true, selectedHero: { id: ”, name: ”, saying: ” } }); } … render() { return ( … ) }}A few…
  • This also allows us to pass any props to our component when it is so lazily loaded.class Heroes extends Component { constructor(props) { super(props); this.state = { … lazyEditHero: null } } async LoadEditForm() { const { default : EditHero } = await import(‘.

In preparation for the DevUp keynote a few weeks ago, I took some time to learn the minimum amount possible to demonstrate code splitting in React. Now your first reaction is probably… As part of the…
Continue reading “Impress Your Friends With Code Splitting in React – Hacker Noon”

7 Strengths of #ReactJS Every Programmer Should Know About

7 Strengths of #ReactJS Every Programmer Should Know About

  • React is blazingly fastIt is actually much faster than manually manipulating the DOM, which is the reason why Flipboard has built their own React-Canvas library to achieve 60fps performance on the mobile web.Modifying the DOM after every change can be slow, therefore React creates a simplified JavaScript version of DOM called VirtualDOM and uses a diffing algorithm to apply only necessary changes to the real DOM.JavaScript is a reasonably fast language, and typical web apps consist of only several hundreds of DOM elements.
  • They have invested years into creating the Facebook site, so a complete rewrite just to use React would not be justifiable.It is really easy to use React with jQuery, Angular, Backbone, or any other JavaScript framework.4.
  • You can create truly native apps with JavaScript and other tools you know from the web.
  • Some of the biggest innovations in React were actually inspired by ClojureScript, some were taken from Ember, and some come from Elm.Whether it is ClojureScript, Elm, Angular, or Ember, these great people are part of our Reactive Community, and they remind us why we should work together every day.The React ecosystem is extremely focused on developer experience and productivity.
  • But Facebook is not the only big supporter of the React community: Yahoo, Mozilla, Airbnb, Netflix, and other big companies use React in production and have supported the community with useful open-source libraries and tools.6.

In the past six years, we have seen a huge rise of JavaScript on the web. It has become a prominent server-side language and a popular compile target for other languages. Offline-first SPAs have…
Continue reading “7 Strengths of #ReactJS Every Programmer Should Know About”

7 Strengths of #ReactJS Every Programmer Should Know About

7 Strengths of #ReactJS Every Programmer Should Know About:  #JavaScript

  • React is blazingly fastIt is actually much faster than manually manipulating the DOM, which is the reason why Flipboard has built their own React-Canvas library to achieve 60fps performance on the mobile web.Modifying the DOM after every change can be slow, therefore React creates a simplified JavaScript version of DOM called VirtualDOM and uses a diffing algorithm to apply only necessary changes to the real DOM.JavaScript is a reasonably fast language, and typical web apps consist of only several hundreds of DOM elements.
  • They have invested years into creating the Facebook site, so a complete rewrite just to use React would not be justifiable.It is really easy to use React with jQuery, Angular, Backbone, or any other JavaScript framework.4.
  • You can create truly native apps with JavaScript and other tools you know from the web.
  • Some of the biggest innovations in React were actually inspired by ClojureScript, some were taken from Ember, and some come from Elm.Whether it is ClojureScript, Elm, Angular, or Ember, these great people are part of our Reactive Community, and they remind us why we should work together every day.The React ecosystem is extremely focused on developer experience and productivity.
  • But Facebook is not the only big supporter of the React community: Yahoo, Mozilla, Airbnb, Netflix, and other big companies use React in production and have supported the community with useful open-source libraries and tools.6.

In the past six years, we have seen a huge rise of JavaScript on the web. It has become a prominent server-side language and a popular compile target for other languages. Offline-first SPAs have…
Continue reading “7 Strengths of #ReactJS Every Programmer Should Know About”

7 Strengths of #ReactJS Every Programmer Should Know About

7 strengths of #ReactJS every programmer should know about ►►►  #JavaScript

  • React is blazingly fastIt is actually much faster than manually manipulating the DOM, which is the reason why Flipboard has built their own React-Canvas library to achieve 60fps performance on the mobile web.Modifying the DOM after every change can be slow, therefore React creates a simplified JavaScript version of DOM called VirtualDOM and uses a diffing algorithm to apply only necessary changes to the real DOM.JavaScript is a reasonably fast language, and typical web apps consist of only several hundreds of DOM elements.
  • They have invested years into creating the Facebook site, so a complete rewrite just to use React would not be justifiable.It is really easy to use React with jQuery, Angular, Backbone, or any other JavaScript framework.4.
  • You can create truly native apps with JavaScript and other tools you know from the web.
  • Some of the biggest innovations in React were actually inspired by ClojureScript, some were taken from Ember, and some come from Elm.Whether it is ClojureScript, Elm, Angular, or Ember, these great people are part of our Reactive Community, and they remind us why we should work together every day.The React ecosystem is extremely focused on developer experience and productivity.
  • But Facebook is not the only big supporter of the React community: Yahoo, Mozilla, Airbnb, Netflix, and other big companies use React in production and have supported the community with useful open-source libraries and tools.6.

In the past six years, we have seen a huge rise of JavaScript on the web. It has become a prominent server-side language and a popular compile target for other languages. Offline-first SPAs have…
Continue reading “7 Strengths of #ReactJS Every Programmer Should Know About”

Redux with React

Redux with React - First Look  #reactjs #Redux #javascript #appdev #programming #devops

  • Let’s start with the basics:

    According to the official site Redux is defined as a predictable state container for JavaScript apps.

  • In Redux, reducers are functions (pure, I will explain what a pure function is later) that take the current state of the application and an action and then return a new state.
  • 3 – Store

    Store is the object that holds the application state and provides a few helper methods to access the state, dispatch actions and register listeners.

  • – Changes are made with pure functions: To specify how the state tree is transformed by actions, you write pure reducers.
  • You might be interested in:

    Predictability of outcome:

    There is always one source of truth, the store, with no confusion about how to sync the current state with actions and other parts of the application.

influenced by Flux architecture and became popular very quickly, excellent documentation and size (2 KB). Also it is very easy to use redux with react
Continue reading “Redux with React”

Testing Common Redux Patterns in React Using AVA

Testing common #Redux patterns in #ReactJS using AVA:

  • Let’s configure the Redux store using our root reducer.
  • As the second argument, we are passing the action which toggles the state of the todo with the given id .
  • When dispatched, the action will cause a todo item of a given id to switch its state, for instance from completed to not completed.
  • /actions’ ; const store = configureStore ({ todos : [ { id : 0 , completed : false , text : ‘buy milk’ }, { id : 1 , completed : false , text : ‘walk the dog’ }, { id : 2 , completed : false , text : ‘study’ } ] }); store .
  • Reducers react to dispatched actions by modifying the store.

This is the second tutorial in our series on testing React and Redux applications.
If you haven’t read the first part, we encourage you to do so.
Continue reading “Testing Common Redux Patterns in React Using AVA”

How to Build a Cross-Platform Blog Using React Native and Node.js

How to Build a Cross-Platform Blog Using React Native and Node.js

  • You need to download Android Studio and make sure you have the correct version of the Java SDK installed and make sure you have all of the developer tools installed.
  • Looking at index.ios.js and index.android.js you will notice that the root of our application for both iOS and Android runs at App.js.
  • Now when you edit content in your Cosmic JS bucket, you will see that the content automatically updates across Web, iOS and Android applications.
  • React Native is a very powerful way to build applications for both iOS and Android.
  • Cosmic JS is an API-first cloud-based content management platform that makes it easy to manage applications and content.

Originally written by Tony Spiro for CosmicJS.com. Tony Spiro is the Co-Founder & CEO of Cosmic JS, an API-first Cloud-based Content Management Platform that decouples content from code, allowing…
Continue reading “How to Build a Cross-Platform Blog Using React Native and Node.js”